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ClipKanal: Laser light Kills Canon 5D Mark II

clip channel: Laser light kills Canon 5D Mark II



Newsmeldung von slashCAM:
Oktober 2010

clip channel: Laser light kills Canon 5D Mark II - 22 Oct 2010 09:24:00
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Der Titel sagt es schon. Wer direkt in einen Laser filmt, kann sich schnell eine komplette Pixelzeile im Sensor schrotten. Und das gilt natürlich nicht nur Canon DSLRs!

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Antwort von BLNeos:

would not the first time;)


or

or

or




Antwort von PeterM:

Interesting.

I used to (early nineties) a plethora s.lasershows filmed. All the 5 to 30 Watt Laser class, but only a never synonymous Kamerea shot.
Ultimately, they were synonymous at that time all the shows for major clients such as Volkswagen, Siemens etc is approved by TÜV.
I wonder if today will be shot out faster due to the smaller sensors, the chips, or whether these days no one pays attention to laser safety.
At least in the green DPSS lasers can see it for a plethora of s.Leistung.
It would be interesting to know whether all the link to place the battered Cams error was permanent.
Anyhow.
At least for some videos might be assumed that could cause the power used synonymous eyes.
The trouble is s.Laseraugenschäden that the person concerned is sometimes not even noticed, and then when the laser while areas outside the area of sharpest vision, destroyed.
The brain repair these defective pixels (rods or cones) rather quickly by interpolation.
Such minimal injury are then often not until many years later found in a fundus examination or at a Gesichtsfekldkontrolle.





Antwort von p@ul:

... Anyone know what happened this technically?



Antwort von stefanf:

"PeterM" wrote:

I used to (early nineties) a plethora s.lasershows filmed. All the 5 to 30 Watt Laser class, but only a never synonymous Kamerea shot.

The statement has the force.
Now I would be interested in times total, with how much digital Aufzeichnisgeräten have you "in the early nineties" rotated.
There are so ahead of your time imme people who were.

Anons there can be such a whiz at the Duch of Fil no permanent spots, as more new material meets.
Maybe a Picture with a flawed, whether it is synonymous seen, however, is the question.

I wonder but rather fail then why all the line and not just a pixel or equal to the entire sensor. The laser travels through the Picture so perfect.
To much power on the pixel possibly a cause of death. Or perhaps other limits than the 90? Because a yes eigendlich chip measures only light. Lots of light = a lot of input. If 100% light-loving then 100% but more will not do so.



Antwort von Axel:

"P @ ul" wrote:
... Anyone know what happened this technically?


Is strongly focused laser light, which however must not necessarily be visible. The decisive factors are the degree of concentration and performance. A specific application is laser show, in which a strong beam of light moving mirror and meets many of these, now scattered and multi-colored rays in space is thrown in the (more visible and more strongly scattered by fog). Show lasers have characteristically ~ 3 watts of power, enough to form about a nightclub with a lot of colored light. The special is s.Showlaser that the laser almost exclusively in the wavelengths radiates, for which our visual cells (and the CMOS - Pixel) are sensitive. A direct hit with a non-deflected, non-scattered laser that emits in the visible spectrum with 3 watts, leading to a "momentary" blindness. A common use with visible laser, ussynonymous playing around with in terms of performance very weak laser pointers, leads have been proved to a steady deterioration of vision, because there are more and more coagulated cells. The small, visible pixel, if one of the laser pointer shines directly on the retina is cooking, a visual cell. How to assess this risk? A good tip for laser show is never in the mirror (the laser source itself may, if everything is according to regulation, in any case of any point in space directly from its cost) to look (a bright but small light point), but only the guaranteed harmless rays to be considered. Already a 5mm wide beam is completely HarmoS. How many known cases of blind disco visitors are there? Worldwide, nearly two dozen, from the time before the equipment checked by the TÜV. Most blind in one eye, just because of the extreme concentration of the beam.



Antwort von PeterM:

@ Stefan
Now it will not take on the gold balance. For the company I then
had the early 90's first stereoscopic 3D projection method developed and we have made laser shows in Europe and the Middle East. In the beginning, with Beta was later documented in the mid 90s s.etwa much synonymous with DV.
Galub me once, I have 100 determines hours laser material by the end of the 90 can rotate or rotated.
Usually at that time were ion laser in grades 5 and 20 watts to 30 W used. These were the big vacuum cleaner have so swallowed the 35KW.
@ Axel sorry but unfortunately this is what you say wrong.
A 5mm laser is physically so with the worst that can happen to you, as the focus point (flexion) in connection with maximum pupil size and thus s.höchsten s.kleinsten is the power density.
What the laser "safe" does not primarily the Strahlurchmesser but the scan by the low power density to a distance of the laser scanners.
Correctly but your comment that the significant accidents undeflected laser beams, z, B is broken by the scanning mirror, or are intended to entanden by high point density.
Unfortunately, there are a lots of hidden synonymous laser accidents.
For this reason it is forbidden eg in the U.S. since the mid-90's
überhaubt to beam into the audience.
All laser effects in the United States needs most then, his list Kpof.
As I said I was only surprised that the s.den video cams have been shot down.
We have time with the Panasonic NV DX1E synonymous had a lot of direct hits, but Cam was never broken.
When one died the drive, the other was stolen in Hanover us.



Antwort von p@ul:

That can all be harmful to the eye even imagine any better. But at a pixel, it is still before me a little funny. For a final pixel fails, it must be either yes or similar heat (of mechanical action, we really see from times) have been exposures. This raises for me in line first asked the question: "Are these dead pixels irreversibly destroyed?"




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